Karesansui Dahe Yang

Quick answer：

Karesansui, or dry landscape gardening, is a traditional Japanese garden style that features carefully raked white sand or gravel arranged to symbolize water. 'Dahe Yang' might refer to the Great River or the Yangtze River, a major waterway in China. The term could be used metaphorically to describe the vastness and grandeur of the river in the context of karesansui.